What's the difference between "virtual memory" and "swap space"?
What's the difference between "virtual memory" and "swap space"?
25813-Jul-2023
Updated on 14-Jul-2023
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I am Utpal Vishwas from Uttar Pradesh. Have completed my B. Tech. course from MNNIT campus Prayagraj in 2022. I have good knowledge of computer networking.
1 Answers
Aryan Kumar
14-Jul-2023Virtual memory and swap space are both terms used to describe how operating systems manage memory in a computer. However, they have different meanings and implications.
Virtual memory is a technique that allows a computer to use more memory than is physically available. This is done by dividing the memory into pages, and then storing the pages in different locations, such as RAM and disk space. The operating system keeps track of which pages are in memory and which pages are on disk. When a program needs to access a page that is not in memory, the operating system will swap the page in from disk.
Swap space is a portion of a computer's disk space that is used to store pages that are not currently in memory. Swap space is typically used when the amount of physical memory is not enough to hold all of the pages that are currently being used by the computer.
The main difference between virtual memory and swap space is that virtual memory is a technique for managing memory, while swap space is a physical location where pages can be stored. Virtual memory allows a computer to use more memory than is physically available, while swap space is used to store pages that are not currently in memory.
Here is a table summarizing the differences between virtual memory and swap space: